Patuxent -- Cataloging Unit 02060006

• Upper Chesapeake Subregion 0206
  
• Mid-Atlantic Region 02 (There are 95 cataloging units in this region.)
  The state composition by area is 100.0% Maryland.
  

  I. Graphical Locater Maps

  Roads

  Water Only

  8 Digit HUCs

  The area of this HUC in these maps is 2409.3 km² ( 930.6 mi² ) [% in USA = 30.70, % in Region = 33.68]
  The area from the USGS is 922 mi².
  

  II. Flow Connections (upstream and downstream units)

  III. Named places in this watershed (total = 3135)

  IV. Elevation Analysis

  This analysis is based on 962468 elevations on a 50 m grid within the area of this HUC.
  The mean elevation is 61.1 m ( 200.5 ft ) [% in USA = 10.00, % in Region = 32.63]
  The elevation standard deviation is 54.7 m ( 179.5 ft ) [% in USA = 41.17, % in Region = 36.84]
  The coefficient of variation is 89.5 %.
  The vertical relief is 259.0 m ( 849.7 ft ) [% in USA = 37.94, % in Region = 32.63]

  Elevation Percentiles

  	0 %	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
  meters	0.0	13.0	17.3	30.0	30.1	42.2	45.3	61.0	121.1	152.0	259.0
  feet	0.0	42.7	56.8	98.4	98.8	138.4	148.6	200.1	397.3	498.7	849.7

  

  V. Map Line Analysis

  Note- percentiles are for the feature density, not for the raw total lengths.
  

  line type	km	mi	km/km²	mi/mi²	% in USA	% in Region
  Perennial Shoreline	610.0	379.1	0.253	0.407	86.07	70.53
  Intermittent Shoreline	0.3	0.2	0.000	0.000	31.98	62.11
  Perennial Streams	1637.2	1017.5	0.680	1.093	96.02	92.63
  Intermittent Streams	96.5	60.0	0.040	0.064	12.13	49.47
  Canals	0.7	0.4	0.000	0.000	39.65	48.42
  1° roads	225.8	140.3	0.094	0.151	96.40	80.00
  2° roads	79.5	49.4	0.033	0.053	61.35	31.58
  3° roads	672.2	417.8	0.279	0.449	98.06	94.74
  4° roads	4957.3	3081.0	2.058	3.311	93.46	75.79
  Total Roads	5934.8	3688.5	2.463	3.963	94.60	76.84
  Railroads	123.5	76.7	0.051	0.082	59.97	31.58
  Pipes and Powerlines	169.4	105.3	0.070	0.113	84.94	83.16

  
  Of the natural water in this HUC, 4.13% (by length) is intermittent [% in USA = 9.85, % in Region = 45.26]

  VI. Other sites

  • EPA- Surf Your Watershed - Index of Watershed Indicators
  • USGS- Science in Your Watershed - Selected Realtime Streamflow Stations
  • CTIC- Known Your Watershed

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  1999 SEPT 4, Last updated on 2003 JAN 23
  
  D.L. Gustafson, dlg@rapid.msu.montana.edu